| Rumi vs Law | 7–7 | 50.00% |
| Rumi vs King | 8–5 | 61.54% |
| Rumi vs Paul | 7–5 | 58.33% |
| Rumi vs Jin | 6–6 | 50.00% |
| Rumi vs Kazuya | 10–1 | 90.91% |
| Rumi vs Jack-8 | 4–5 | 44.44% |
| Rumi vs Lili | 3–6 | 33.33% |
| Rumi vs Dragunov | 8–1 | 88.89% |
| Rumi vs Yoshimitsu | 2–6 | 25.00% |
| Rumi vs Hwoarang | 4–3 | 57.14% |
| Rumi vs Xiaoyu | 6–1 | 85.71% |
| Rumi vs Lars | 4–3 | 57.14% |
| Rumi vs Bryan | 4–2 | 66.67% |
| Rumi vs Victor | 4–2 | 66.67% |
| Rumi vs Steve | 2–3 | 40.00% |
| Rumi vs Asuka | 3–2 | 60.00% |
| Rumi vs Shaheen | 4–1 | 80.00% |
| Rumi vs Leroy | 3–1 | 75.00% |
| Rumi vs Heihachi | 2–2 | 50.00% |
| Rumi vs Devil Jin | 1–2 | 33.33% |
| Rumi vs Jun | 1–2 | 33.33% |
| Rumi vs Azucena | 2–1 | 66.67% |
| Rumi vs Eddy | 2–1 | 66.67% |
| Rumi vs Feng | 2–0 | 100.00% |
| Rumi vs Leo | 1–1 | 50.00% |
| Rumi vs Claudio | 2–0 | 100.00% |
| Rumi vs Lee | 0–2 | 0.00% |
| Rumi vs Panda | 0–2 | 0.00% |
| Rumi vs Zafina | 1–0 | 100.00% |
| Rumi vs Reina | 1–0 | 100.00% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.